a to ti si tu
a to ti si tu !
ä WORD_BOUNDARY t̪̻ o̞ WORD_BOUNDARY t̪̻ i WORD_BOUNDARY s̪̻ i WORD_BOUNDARY t̪̻ u WORD_BOUNDARY
a WORD_BOUNDARY t o WORD_BOUNDARY t i WORD_BOUNDARY s i WORD_BOUNDARY t u WORD_BOUNDARY ! WORD_BOUNDARY